Abstract

A Sc-Si multilayer coating was applied to a replica of the 3600 groove/mm grating, developed for the SO82A spectroheliograph that flew on the Skylab mission, for the purpose of enhancing the normal-incidence efficiency in the extreme-ultraviolet region. The efficiency, measured at an angle of incidence of 6° with synchrotron radiation, had a maximum value of 7.2% at a wavelength of 38 nm and was a factor of 3 higher than the efficiency of the gold-coated Skylab grating. The measured efficiency of the Sc-Si grating was in good agreement with the efficiency calculated by use of the modified integral method.

© 2002 Optical Society of America

Normal-incidence efficiencies in the 115–340-Å wavelength region of replicas of the Skylab 3600-line/mm grating with multilayer and gold coatings

J. F. Seely, M. P. Kowalski, W. R. Hunter, T. W. Barbee, R. G. Cruddace, and J. C. Rife
Appl. Opt. 34(28) 6453-6458 (1995)

Grazing-incidence efficiencies in the 28–42-Å wavelength region of replicas of the Skylab 3600-line/mm concave grating with multilayer and gold coatings

W. R. Hunter, J. F. Seely, M. P. Kowalski, J. C. Rife, and T. W. Barbee
Appl. Opt. 36(25) 6411-6415 (1997)

Normal-incidence efficiencies of 4800-grooves/mm-ruled replica gratings with multilayer and gold coatings in the 125–325-Å wavelength region

John F. Seely, Tetsuya Watanabe, Tatsuo Harada, Jack C. Rife, and William R. Hunter
Appl. Opt. 38(10) 1920-1925 (1999)

High-efficiency MoRu–Be multilayer-coated gratings operating near normal incidence in the 11.1–12.0-nm wavelength range

John F. Seely, Claude Montcalm, Sherry Baker, and Saša Bajt
Appl. Opt. 40(31) 5565-5574 (2001)

Performance of normal-incidence molybdenum-yttrium multilayer-coated diffraction grating at a wavelength of 9 nm

Benjawan Sae-Lao, Saša Bajt, Claude Montcalm, and John F. Seely
Appl. Opt. 41(13) 2394-2400 (2002)